From: Hollis Blanchard <hollisb@us.ibm.com>
To: avi@redhat.com
Cc: kvm@vger.kernel.org, kvm-ppc@vger.kernel.org
Subject: [PATCH 0 of 6] PowerPC KVM patches for 2.6.29
Date: Tue, 02 Dec 2008 15:51:52 -0600 [thread overview]
Message-ID: <patchbomb.1228254712@localhost.localdomain> (raw)
Hi Avi, here's the latest batch of PowerPC kernel patches.
The first set dramatically improve performance. Most importantly, we add
support for large host pages with KVM (i.e. PAGE_SHIFT > 12). (Large *guest*
pages have already been supported since day 1, since the guest kernel uses
them for the linear map.) Followup patches further improve performance by
changing how we manage the shadow TLB.
The last two add some accounting code to easily discover performance
bottlenecks. This is especially important since the 440 core lacks performance
monitoring hardware.
These patches, in conjunction with 64KB pages on guest and host, get us to 96%
of native performance for compute-bound workloads, which I'm pretty happy
with. See http://kvm.qumranet.com/kvmwiki/PowerPC_Exittimings for more
details (those statistics were gathered using the accounting patches).
These have been tested pretty thoroughly for several weeks. Please apply for
2.6.29. Thanks!
-Hollis
next reply other threads:[~2008-12-02 21:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-02 21:51 Hollis Blanchard [this message]
2008-12-02 21:51 ` [PATCH 1 of 6] kvm: ppc: support large host pages Hollis Blanchard
2008-12-02 21:51 ` [PATCH 2 of 6] powerpc/44x: declare tlb_44x_index for use in C code Hollis Blanchard
2008-12-02 21:51 ` [PATCH 3 of 6] kvm: ppc: directly insert shadow mappings into the hardware TLB Hollis Blanchard
2008-12-02 21:51 ` [PATCH 4 of 6] kvm: ppc: save and restore guest mappings on context switch Hollis Blanchard
2008-12-02 21:51 ` [PATCH 5 of 6] kvm: ppc: Implement in-kernel exit timing statistics Hollis Blanchard
2008-12-02 21:51 ` [PATCH 6 of 6] kvm: ppc: mostly cosmetic updates to the exit timing accounting code Hollis Blanchard
2008-12-03 11:32 ` [PATCH 0 of 6] PowerPC KVM patches for 2.6.29 Avi Kivity
[not found] ` <49366E68.4080904-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-12-03 16:04 ` Hollis Blanchard
[not found] ` <1228320269.10084.7.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2008-12-03 17:06 ` Avi Kivity
2008-12-03 19:22 ` Hollis Blanchard
2008-12-03 19:31 ` Hollis Blanchard
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